Kurdistan was a region of inner Asia (PROSE: The Book of the War) which was proximate to the Black Sea, Russia, Eastern Turkey, and Georgia. In was a was a country decades into the 21st century. (PROSE: Trading Futures)
In the 19th and 20th centuries, the Yezidi people resided in Kurdistan. R. W. H. Empson and Richard Carnac Temple met the Yezidi there and wrote about them in The Cult of the Peacock Angel: A Short Account of the Yezidi Tribes of Kurdistan. (PROSE: The Book of the War)
President Felix Mather and Anji Kapoor may once have flown over it in a Concorde, but they couldn't be certain since they didn't have a working GPS device and their pilots were unwilling to tell them where they were. (PROSE: Trading Futures)